Question

In a two-dimensional grid, the elements are ____________ in shape and have ___________ neighbours.

(a) Quadrilateral, 4

(b) Cube, 6

(c) Cube, 4

(d) Cuboid, 4

I got this question in a national level competition.

Asked question is from FVM in chapter Finite Volume Methods of Computational Fluid Dynamics

Answer 1

The correct answer is (a) Quadrilateral, 4

To explain: For a two-dimensional grid, there are four faces and four vertices for every element. And, each element is surrounded by four elements. With this, we cannot say if they are cubes or cuboids. In general, we can say they will definitely be quadrilaterals.